If the computer doesn't recognize the drive at all (or it shows as 0MB), the NAND chip may have detached from the PCB or the controller is dead. Recovery services will desolder the NAND flash chip directly and read it with a programmer. Cost: $300–$1000. Only for critical data.
When you see instead of your flash drive's actual name (e.g., "Kingston DataTraveler" or "SanDisk Cruzer"), it indicates that the operating system can no longer read the drive's firmware or its unique identifying data. usb mass storage devicenand usb2disk full
The internal software that tells the USB Flash Drive how to read and write data has crashed. If the computer doesn't recognize the drive at
Use a tool like ChipGenius to find the "Controller Part-Number" and "VID/PID". Only for critical data
Understanding and Fixing the "USB Mass Storage Device NAND USB2DISK Full" Error
Check the sides of your USB for a tiny lock switch and slide it to the "unlocked" position. Software Clear: window (from step 1), after selecting your disk, type attributes disk clear readonly and press Enter. 3. Update or Refresh Drivers